The system, called "Digital Life," works through a home's broadband and wireless phone service, so customers can use a smartphone, tablet or computer to control their home's security features. It works with Internet and wireless providers other than AT&T, said Chris Lester, spokesman for AT&T in Kansas.

Customers can build plans with extra security features, such as cameras they can monitor via their smartphones, and nonsecurity options, such as remotely controlling their thermostats and lights, Lester said. The security system is monitored by AT&T centers, and customers receive a text message if something goes wrong, he said.

"Essentially you're turning your home into a robot that you control remotely," he said. "You can unlock the door from across the country."
Steve Hahn, president of AT&T Kansas, said their system offers more security than some other companies' because it operates wirelessly.

The service has been around for about one year and is gradually expanding to new markets, Hahn said. AT&T is evaluating more potential markets based on demand, competition, and whether 3G wireless service and broadband Internet are available, he said.

"We're not finished by any means," he said.

Cost is $30 a month with a $150 equipment and installation fee for the basic package, which includes home monitoring service, remote access, three sensors to alert you if a door was opened, a keypad and a keychain remote that can unlock doors.

Cost is $40 a month with a $250 equipment and installation fee for the more advanced package, which includes the basic package and a motion sensor and smoke sensor. For extra monthly fees, customers also can buy home cameras and systems that control doors, lights, the thermostat and small appliances, or systems that detect leaks and shut off water mains if necessary.

The system will be sold for the first time Friday in Topeka; Corpus Christi, Texas; Fayetteville, Ark.; Poughkeepsie, N.Y.; Youngstown, Ohio; Charleston, S.C.; and Stockton, Calif. That brings the total markets to 75, including the Kansas City area and Wichita.